Question
Rings and fields
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Posted: 2 Oct 09 11:43 Number of bids: 0 |
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Question:
Determine whether the following sets are rings under addition and multiplication. If a set is a ring, check whether it is a field also.
- The positive integers
- The fourth root of unity
- Number of the form 3x where x is an integer
- Complex numbers a + bi; a and b are integers
- The positive integers
- The fourth root of unity
- Number of the form 3x where x is an integer
- Complex numbers a + bi; a and b are integers
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